1.1 This specification covers the requirements for ethylene glycol or propylene glycol base engine coolants used in automobiles or other light duty service cooling systems. When concentrates are used at 40 to 70 % concentration by volume in water, or when prediluted glycol base engine coolants 50 volume % or higher engine coolant concentrate are used without further dilution, they will function effectively to provide protection against freezing, boiling, and corrosion.

1.2 The coolants governed by this specification are categorized as follows:

Coolant Type

Description

I

Ethylene glycol base concentrate

II

Propylene glycol base concentrate

V

Ethylene glycol base concentrate
containing glycerin

III

Ethylene glycol predilute 50 volume % or higher engine coolant concentrate

IV

Propylene glycol predilute 50 volume % or higher engine coolant concentrate

VI

Ethylene glycol base predilute
containing glycerin 50 volume % or higher engine coolant concentrate

1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.